Five numbers have a mean of 20. When one of them, 32, is removed, what is the mean of the remaining four?
Answer and explanation
Correct answer: A. 17
- Step 1: The sum is 5 x 20 = 100.
- Step 2: Without 32 the sum is 68, and the mean of four numbers is 68 / 4 = 17.
Answer
17.
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